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SE9800292D0 - Method for reducing clumping and cladding propensity of reducible iron-containing agglomerates, especially in pellets - Google Patents

Method for reducing clumping and cladding propensity of reducible iron-containing agglomerates, especially in pellets

Info

Publication number
SE9800292D0
SE9800292D0 SE9800292A SE9800292A SE9800292D0 SE 9800292 D0 SE9800292 D0 SE 9800292D0 SE 9800292 A SE9800292 A SE 9800292A SE 9800292 A SE9800292 A SE 9800292A SE 9800292 D0 SE9800292 D0 SE 9800292D0
Authority
SE
Sweden
Prior art keywords
pellets
reducible iron
propensity
cladding
reducing
Prior art date
Application number
SE9800292A
Other languages
Swedish (sv)
Other versions
SE517337C2 (en
SE9800292L (en
Inventor
Roger Klemo
Original Assignee
Luossavaara Kiirunavaara Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luossavaara Kiirunavaara Ab filed Critical Luossavaara Kiirunavaara Ab
Priority to SE9800292A priority Critical patent/SE517337C2/en
Publication of SE9800292D0 publication Critical patent/SE9800292D0/en
Priority to AU26463/99A priority patent/AU740945B2/en
Priority to IDW991139A priority patent/ID23691A/en
Priority to DE19980316T priority patent/DE19980316B3/en
Priority to PCT/SE1999/000041 priority patent/WO1999039014A1/en
Priority to US09/381,166 priority patent/US6332912B1/en
Priority to CA002284603A priority patent/CA2284603C/en
Priority to BR9904814-0A priority patent/BR9904814A/en
Publication of SE9800292L publication Critical patent/SE9800292L/en
Priority to NO994735A priority patent/NO326766B1/en
Publication of SE517337C2 publication Critical patent/SE517337C2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

The invention relates to a method for reducing the formation of clods and the clustering tendency of reducible iron-containing agglomerated material, particularly so-called pellets, whereby the reducible iron-containing agglomerated material, following a desulfurization process that takes place after a sintering process during the manufacture of the pellets, is given an outer layer of clustering-reducing material in the form of a liquid suspension of particulate material. According to the invention, a more even distribution of the coating on the surface of the agglomerate is achieved in that the application of the liquid suspension takes place during tumbling in a drum that is designed so that the agglomerate together with the liquid suspension can essentially pass freely through it.
SE9800292A 1998-02-02 1998-02-02 Process for reducing the clumping and cladding propensity of iron-containing agglomerated material SE517337C2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE9800292A SE517337C2 (en) 1998-02-02 1998-02-02 Process for reducing the clumping and cladding propensity of iron-containing agglomerated material
BR9904814-0A BR9904814A (en) 1998-02-02 1999-01-14 Process to reduce the formation of clods and the tendency to group agglomerated material containing reducible iron.
PCT/SE1999/000041 WO1999039014A1 (en) 1998-02-02 1999-01-14 Method to lower the formation of clods and the clustering tendency of reducible iron containing agglomerated material, in particular pellets
IDW991139A ID23691A (en) 1998-02-02 1999-01-14 METHODS TO DECREASE THE FORMATION OF COLLARS AND THE TRENDS OF COLLECTING FROM MATERIALS WHICH CONTAIN IRON WHICH CAN BE REDUCED, SPECIALLY PELETS
DE19980316T DE19980316B3 (en) 1998-02-02 1999-01-14 A method for reducing the formation of lumps and the tendency to cluster of reducible iron-containing agglomerated material, in particular pellets
AU26463/99A AU740945B2 (en) 1998-02-02 1999-01-14 Method to lower the formation of clods and the clustering tendency of reducible iron containing agglomerated material, in particular pellets
US09/381,166 US6332912B1 (en) 1998-02-02 1999-01-14 Method to lower the formation of clods and the clustering tendency of reducible iron containing agglomerated material, in particular pellets
CA002284603A CA2284603C (en) 1998-02-02 1999-01-14 Method to lower the formation of clods and the clustering tendency of reducible iron containing agglomerated material, in particular pellets
NO994735A NO326766B1 (en) 1998-02-02 1999-09-29 Method for reducing the formation of lumps and cluster tendency of reducible iron-containing agglomerated material, in particular pellets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9800292A SE517337C2 (en) 1998-02-02 1998-02-02 Process for reducing the clumping and cladding propensity of iron-containing agglomerated material

Publications (3)

Publication Number Publication Date
SE9800292D0 true SE9800292D0 (en) 1998-02-02
SE9800292L SE9800292L (en) 1999-08-03
SE517337C2 SE517337C2 (en) 2002-05-28

Family

ID=20410057

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9800292A SE517337C2 (en) 1998-02-02 1998-02-02 Process for reducing the clumping and cladding propensity of iron-containing agglomerated material

Country Status (9)

Country Link
US (1) US6332912B1 (en)
AU (1) AU740945B2 (en)
BR (1) BR9904814A (en)
CA (1) CA2284603C (en)
DE (1) DE19980316B3 (en)
ID (1) ID23691A (en)
NO (1) NO326766B1 (en)
SE (1) SE517337C2 (en)
WO (1) WO1999039014A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0201453D0 (en) * 2002-05-10 2002-05-10 Luossavaara Kiirunavaara Ab Method to improve iron production rate in a blast furnace
US7768773B2 (en) 2008-01-22 2010-08-03 Avx Corporation Sintered anode pellet etched with an organic acid for use in an electrolytic capacitor
MY182934A (en) 2013-07-29 2021-02-05 Nippon Steel Corp Raw material for direct reduction, method of producing raw material for direct reduction, and method of producing reduced iron
JP6724677B2 (en) * 2016-09-16 2020-07-15 日本製鉄株式会社 Granulating apparatus and granulating method for sintering raw material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL30336A (en) * 1967-07-12 1971-05-26 Stauffer Chemical Co Method and apparatus for agglomerating dusts and the like
US4075370A (en) * 1976-04-28 1978-02-21 Ogden Metals, Inc. Passivating metallic cuttings and turnings
NL163973C (en) 1977-04-28 1980-11-17 Azote Sa Cie Neerlandaise Apparatus for coating granular material with a liquid coating agent.
US5372628A (en) * 1993-09-10 1994-12-13 Akzo N.V. Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
US5476532A (en) * 1993-09-10 1995-12-19 Akzo Nobel N.V. Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
US5443637A (en) * 1993-09-17 1995-08-22 Coating Machinery Systems, Inc. Means for continuously coating particulate material
BR9501228A (en) * 1995-03-23 1997-08-05 Vale Do Rio Doce Co Production process and coating application to reduce the tendency for iron ore pellets and granules to stick together

Also Published As

Publication number Publication date
AU740945B2 (en) 2001-11-15
DE19980316B3 (en) 2011-12-15
NO994735D0 (en) 1999-09-29
US6332912B1 (en) 2001-12-25
WO1999039014A1 (en) 1999-08-05
AU2646399A (en) 1999-08-16
CA2284603C (en) 2009-06-02
DE19980316T1 (en) 2000-05-11
BR9904814A (en) 2000-05-23
SE517337C2 (en) 2002-05-28
NO994735L (en) 1999-09-29
ID23691A (en) 2000-05-11
SE9800292L (en) 1999-08-03
CA2284603A1 (en) 1999-08-05
NO326766B1 (en) 2009-02-16

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Legal Events

Date Code Title Description
NUG Patent has lapsed